Big bathroom should use bigger sheet of cotton as the window is probably bigger than other bathroom. If the wet part of your bathroom quite far from your windows you can hang your curtain low. The luxury design for the curtain is necessary since you may have luxurious furniture and design in your bathroom. You should choose to use bathroom rug and curtain sets to make your choice easier. Make sure you know the material for this curtain and rug. Cotton curtain is better than any kind of other choice. Some sets are also available for smaller bathroom but you may have to adjust the curtain.